narrownico

Hello everyone, im new here at cctvforum.com, so pardon me if this is the wrong section. Well, the thing is I installed a CCTV system and configure a DDNS via NO-IP. I've the remote acces working on like 6 android phones with no actual problems, but for some unknown reason i cant make it work on 2 samsung galaxy grand prime phones. The APP im using is VmEYE and the error i keep getting is Server Unavailable. Any ideas? Sorry for bad english, greetings everyone, Nicolas.